How can i involve four cpu on running a program in matlab 2014?

when i use parpool or matlabpool,program uses only extra ram not cpu whatever i do,my program only uses 25% of cpu what should i do that its uses whole cpu or at least 75% of cpu?

Answer 1

[Chaitra]

Executing parpool command starts a pool using the current cluster profile, with the pool size specified by your parallel preferences and the current profile. I would recommend you to check these parameter settings. If these parameter settings are absent, it defaults to the number of cores that your system has.

To start a cluster of 4 CPUs you can execute the command:

>>parpool 4

Execute this command and then run your program and check the usage of CPU. Also, you specified that there is 25% CPU utilization seen. Is this observed on all the CPUs on your system? The usage of CPU depends on how computationally intensive your program is.

[MA]

to your question,it uses 25% of whole 4 cpu or 100% of one cpu of my system

[Chaitra]

Is your program computationally intensive? Did you check the parameter settings?